Here are some of the strange things people around the world do for Christmas in the name of celebration.
Iceland: The Yule Cat (Jolakotturinn)
The Icelandics are big fans of myths and of hard work. (They have the most overtime in Europe.) One famous Christmas character is the scary Yule Cat who eats children who haven't worked hard enough. Basically, if you have finished all your work before Christmas you get new clothes and you are safe. The scary Icelandic Yule cat only looks for the lazy ones in old clothes. A good reason to go clothes shopping.
In Sweden, you eat rice pudding at Christmas (before or after the Smorgasbord) and the big question is: Who will get the almond? There is one peeled almond hiding somewhere in the rice pudding and the lucky one who gets it will get married within a year.